Why Do We Feel Hot in Temperatures Lower Than Our Body Temp?

iStock / AntonioGuillem
iStock / AntonioGuillem

Reader PartiallyDeflected wrote in to ask, “Since our body temperature is around 98 degrees, why do we feel hot when it’s 90?”

Pretty much everything your body does, whether physical (like muscle contractions) or chemical (like some stages of digestion), produces heat as a byproduct. You’re constantly generating it, and constantly losing it to the environment. The hypothalamus, an almond-sized chunk of the brain that rests deep within its squishy confines, acts as the body’s thermostat and tries to keep the amount of heat created and the amount lost close to each other and maintain normal body temperature.

Normally, this is easy enough. Heat seeks equilibrium, a state where everything is the same temperature as everything around it. It’s why a bowl of hot soup and a glass of ice water will both reach room temperature if you leave them out on the counter long enough. Usually, the environment around you is cooler than your body, so your little thermostat can just dump the excess heat into it with thermoregulatory processes like sweating (where the heat is lost by evaporation) and increasing bloodflow through capillaries close to the surface of the skin (where the heat is lost through radiation, convection and conduction).

When there’s a big temperature difference between your body and your environment, heat flows out of you and into the air pretty easily, and you cool down quickly. When the environment is warmer and closer to our body temperature, though, the heat doesn’t transfer as readily or quickly via radiation, convection, and conduction. You’re stuck hanging on to some of your excess heat for longer, and you feel hot and uncomfortable (and if the ambient temperature goes higher than your body temp, heat’s quest for equilibrium means that you’ll take on excess heat from the environment). If conditions are hot and dry, the body can deal with these situations by ramping up sweat to get rid of more heat through evaporation. When it’s hot and humid, though, you really feel hot and gross because the high moisture content of the air makes it more difficult for the sweat to evaporate.

If you spend enough time in a situation where the heat you generate or absorb from the environment exceeds the heat you’re getting rid of, your core temperature will rise and you can suffer from heat illnesses.

Amazon's Under-the-Radar Coupon Page Features Deals on Home Goods, Electronics, and Groceries

Stock Catalog, Flickr // CC BY 2.0
Stock Catalog, Flickr // CC BY 2.0

This article contains affiliate links to products selected by our editors. Mental Floss may receive a commission for purchases made through these links.

Now that Prime Day is over, and with Black Friday and Cyber Monday still a few weeks away, online deals may seem harder to come by. And while it can be a hassle to scour the internet for promo codes, buy-one-get-one deals, and flash sales, Amazon actually has an extensive coupon page you might not know about that features deals to look through every day.

As pointed out by People, the coupon page breaks deals down by categories, like electronics, home & kitchen, and groceries (the coupons even work with SNAP benefits). Since most of the deals revolve around the essentials, it's easy to stock up on items like Cottonelle toilet paper, Tide Pods, Cascade dishwasher detergent, and a 50 pack of surgical masks whenever you're running low.

But the low prices don't just stop at necessities. If you’re looking for the best deal on headphones, all you have to do is go to the electronics coupon page and it will bring up a deal on these COWIN E7 PRO noise-canceling headphones, which are now $80, thanks to a $10 coupon you could have missed.

Alternatively, if you are looking for deals on specific brands, you can search for their coupons from the page. So if you've had your eye on the Homall S-Racer gaming chair, you’ll find there's currently a coupon that saves you 5 percent, thanks to a simple search.

To discover all the deals you have been missing out on, head over to the Amazon Coupons page.

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30 Pungent Facts About Farts

This man is clearly not trying to hide the fact he just passed gas.
This man is clearly not trying to hide the fact he just passed gas.
BrilliantEye/iStock via Getty Images

Whether you openly admit it or desperately try to hide it, it’s an undeniable fact that every living and breathing human being farts. And while passing what you thought was going to be silent gas only to be wrong in certain situations can definitely be embarrassing, there’s something undeniably humorous about flatulence—no matter your age.

If you do love a good fart joke, you’re in good company. The very first recorded joke, which was written by the Sumerians and dates all the way back to 1900 BCE, was about—you guessed it—breaking wind. And some of the world's great thinkers, from William Shakespeare to J.D. Salinger, have slipped a fart joke (or 10) into their work.

In this episode of The List Show, we're sniffing out 30 fascinating facts about farts—from why humans expel gas to how often the average adult squeezes the cheese. You can watch the full episode below.

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